Cold Exposure Protocol
Start slow, build tolerance
You don't need an ice bath on day one. Progressive cold exposure builds resilience and trains your body to recruit brown fat and manage stress response.
Your 4-week cold protocol
See how to progressively build cold tolerance.
This step is interactive — open the Thier app to try it.
Fill in the blank
Complete the cold protocol guideline.
This step is interactive — open the Thier app to try it.
Breath > water temperature
The single biggest variable in tolerating a cold plunge isn't the water temperature — it's whether you can keep breathing slowly. The cold-shock response forces a 2-3× increase in respiratory rate; controlling that with deliberate slow nasal breaths is what separates 'I lasted 30 seconds' from 'I lasted 3 minutes'. Start each plunge with 3-4 long slow exhales BEFORE you enter.
Cold safety — when NOT to plunge
Tap each scenario.
This step is interactive — open the Thier app to try it.
Key Takeaway
Aim for 11 minutes of cold exposure per week across 2-3 sessions. Start with cold showers, progress to immersion. The benefits are dose-dependent.